--- title: "Solar Panels Low Output in Kenya: Dust, Shade, Faults | Qyvea" url: https://qyvea.co.ke/solar-panels-low-output-kenya description: "Solar producing less than it used to? Dust, shade, hot panels, failed strings and wiring losses explained, with a simple way to check your system's output." updated: 2026-10-17 --- > Markdown copy of https://qyvea.co.ke/solar-panels-low-output-kenya for AI assistants. Prices and stock change; check the live page. 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Causes and Fixes Dust, shade, heat and failed strings: why output drops and what to do. Every day this stays broken costs you more than the repair would. Read on: it takes a few minutes and could save you a lot more than that. **In this guide you will see:** - Compare midday output on a clear day. - Dust is the most common cause in dry seasons. - New shade from buildings or trees costs a lot of output. Quick answer Solar output drops because of dust, new shade, a failed panel or string, loose connectors or inverter limits. Compare today's midday output with a clear day when the system was new. In Kenya, dust can cut output noticeably within weeks in dry seasons, and output also dips on very hot days. Clean the panels and check for shade first; a big sudden drop usually means a failed string or connector. [Photo: Andre Taissin / Unsplash](https://unsplash.com/photos/LBPU8K7loz8) Why act on it now ## A fault you ignore is a fault that grows. ### If you wait - Working around the fault for another week - A small problem turning into a replacement - Nobody checking the rest of the system ### What you get - The likely cause found fast, with the checks in this guide - A technician who fixes it properly if the checks do not - A system you can rely on again [Jinko Solar 450W Mono](/products/jinko-solar-450w-mono-perc-solar-panel-102 "Jinko Solar 450W Mono PERC Solar Panel")[Must 6kva solar inverter](/products/must-6kva-solar-inverter-28900 "Must 6kva solar inverter")[200Ah 24V LiFePO4 Lithium](/products/200ah-24v-lifepo4-lithium-battery-pack-413 "200Ah 24V LiFePO4 Lithium Battery Pack") [Get my free quote on WhatsApp](https://wa.me/254113301244?text=Hi%20Qyvea%2C%20I%20read%20your%20guide%3A%20Solar%20Panels%20Producing%20Less%20Power%3F%20Causes%20and%20Fixes.%20I%20want%20solar%20and%20backup%20power%20sorted.%20Can%20you%20help%3F)Reply usually within 30 minutes. Free site survey in Nairobi and nearby counties. Real products, live prices, in stock now ## Key takeaways - Compare midday output on a clear day. - Dust is the most common cause in dry seasons. - New shade from buildings or trees costs a lot of output. - A sudden drop of a third or more suggests a failed string. - Export limits or a full battery can cap production. ## Quick checks you can do first 1. **Check today's peak**: Note the peak watts around noon on a clear day. 2. **Clean safely**: Rinse with water and a soft brush early in the morning; never walk on panels. 3. **Look for shade**: Even part-shading of one panel can pull down a whole string. 4. **Check the limits**: A full battery or zero-export setting reduces what the panels deliver. 5. **Check strings**: If your inverter has two PV inputs, compare them. **Important**: Switch off and isolate power before opening any equipment. Batteries, inverters and mains wiring can cause serious injury; leave internal work to a qualified technician. ## What usually causes it | Symptom | Likely cause | Fix | | --- | --- | --- | | Gradual drop | Dust and dirt | Regular cleaning | | Drop in afternoons | New shade | Trim or relocate | | Sudden 30–50% drop | Failed string or connector | Technician string test | | Production flat at midday | Battery full or export limit | Normal; add loads or storage | | Burn marks or cracked glass | Damaged panel | Replace panel | ## When to call a technician - Output dropped suddenly. - The roof is unsafe to access. - You see burn marks, cracks or melted connectors. - You want a full performance check before expanding. **When to call a professional**: Qyvea technicians diagnose and fix this on site across Nairobi and Kenya. Call [0113 301 244](tel:+254113301244) or [WhatsApp a technician](https://wa.me/254113301244?text=Hi%20Qyvea%2C%20I%20need%20a%20technician%20for%20solar%20output). Running this across several sites or branches? A [Qyvea maintenance contract](https://qyvea.co.ke/maintenance-contracts-for-business-kenya) catches these faults on scheduled visits, with a written report after each one. ## Parts that fix it ## Frequently asked questions How much power should my panels produce? On a clear Kenyan day, expect roughly 4 to 5 kWh per kW of panels. Actual output depends on angle, shade and temperature. Does rain clean solar panels? Partly. Heavy rain helps, but dust films and bird droppings usually need a wash. Can I add panels to my system? Often, if the inverter's PV input has spare capacity. We check before adding. ## Why customers choose Qyvea **Genuine brands**: Manufacturer warranty on what we sell, so you are not gambling on the box. **One team, start to finish**: The people who advise you also install and support it. **Fast answers**: WhatsApp replies usually within 30 minutes, and delivery within 24 hours in Nairobi. **Easy to buy**: Pay by M-Pesa, bank transfer or card. Free delivery in Nairobi on orders over KES 5,000. **Risk taken off you**: 7-day returns and exchanges on products, and a workmanship warranty on installations. **Customers say so**: Rated 4.6/5 from 57 Google reviews. **Your next step takes one minute:** send us a photo of the place on WhatsApp and we will tell you what it needs. ## Related articles [Solar & Electrical · Troubleshooting Solar Not Charging the Battery? 8 Things to Check PV input, breakers, charger settings, battery type: find where charging stops. 3 min read**READ FULL ARTICLE →**](https://qyvea.co.ke/solar-not-charging-battery-kenya)[Solar & Electrical · Troubleshooting Inverter Beeping? What Each Beep Means and How to Stop It Overload, low battery, grid or overheating: what the beeping means and what to do. 3 min read**READ FULL ARTICLE →**](https://qyvea.co.ke/inverter-beeping-kenya)[Solar & Electrical · Troubleshooting Inverter Overload: Why It Trips and How to Stop It Find the load that trips it, handle motor start-up surges, and size correctly. 3 min read**READ FULL ARTICLE →**](https://qyvea.co.ke/inverter-overload-tripping-kenya) ### Related services [Solar Installation](https://qyvea.co.ke/solar-installation)[Solar Backup Solutions](https://qyvea.co.ke/solar-solutions) ### Related products [Best solar backup systems](https://qyvea.co.ke/best-solar-backup-system-kenya) ### Related projects [Real Qyvea case studies](https://qyvea.co.ke/projects#case-studies) [← Previous**Solar Not Charging the Battery? 8 Things to Check**](https://qyvea.co.ke/solar-not-charging-battery-kenya)[Next →**: Solar Water Heater Installation**](https://qyvea.co.ke/solar-water-heater-installation-kenya) ## Still experiencing the problem? Qyvea can inspect and diagnose the system on site. Chat with us — 30 min response --- **Qyvea Limited** · Westlands, Nairobi, Kenya (delivery only, no walk-in pickup) · serving all 47 counties Phone/WhatsApp: [+254 113 301 244](https://wa.me/254113301244) · Email: info@qyvea.co.ke · Shop: [qyvea.co.ke/products](https://qyvea.co.ke/products) · Facts: [qyvea.co.ke/qyvea-facts](https://qyvea.co.ke/qyvea-facts)